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Kamel R, El-Wakil NA, Abdelkhalek AA, Elkasabgy NA. Topical cellulose nanocrystals-stabilized nanoemulgel loaded with ciprofloxacin HCl with enhanced antibacterial activity and tissue regenerative properties. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102553] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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2
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Abdelhakeem E, El-Nabarawi M, Shamma R. Effective Ocular Delivery of Eplerenone Using Nanoengineered Lipid Carriers in Rabbit Model. Int J Nanomedicine 2021; 16:4985-5002. [PMID: 34335024 PMCID: PMC8318821 DOI: 10.2147/ijn.s319814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/06/2021] [Indexed: 12/21/2022] Open
Abstract
Background Eplerenone (Epl) is a selective mineralocorticoid-receptor antagonist used for chronic central serous chorioretinopathy treatment. Our goal was to enhance the corneal performance of Epl-loaded nanostructured lipid carriers (NLCs) through surface modification using different coating polymers. Methods Epl-loaded modified NLCs (Epl-loaded MNLCs) were prepared by coating the surface of Epl-loaded NLCs using different polymers, namely hyaluronic acid, chitosan oligosaccharide lactate, and hydrogenated collagen. A 31×41 full factorial design was used to evaluate the effect of the surface modification on the properties of the prepared systems. Selected optimal Epl-loaded MNLCs were further evaluated for in vitro drug release, morphology, pH, rheological properties, corneal mucoadhesion, irritation, and penetration. Results Epl-loaded MNLCs were successfully prepared with high drug-entrapment efficiency and nanosized particles with low size distribution. Transmission electron microscopy revealed nanosized spherical particles surrounded by a coating layer of the surface modifier. The pH, refractive index, and viscosity results of the Epl-loaded MNLCs confirmed the ocular compatibility of the systems with no blurring of vision. The safety and ocular tolerance of the optimal MNLCs were confirmed using the hen’s egg test on chorioallantoic membrane and by histopathological evaluation of rabbit eyes treated with the optimal systems. Confocal laser-scanning microscopy of corneal surfaces confirmed successful transcorneal permeation of the Epl-loaded MNLCs compared to the unmodified Epl-loaded NLCs, revealed by higher corneal fluorescence intensity at all time intervals. Conclusion Overall, the results confirmed the potential of Epl-loaded MNLCs as a direct approach for Epl ocular delivery.
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Affiliation(s)
- Eman Abdelhakeem
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rehab Shamma
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Pavelková M, Vysloužil J, Kubová K, Pavloková S, Molinková D, Celer V, Pechová A, Mašek J, Vetchý D. Assessment of Antimicrobic, Antivirotic and Cytotoxic Potential of Alginate Beads Cross-Linked by Bivalent Ions for Vaginal Administration. Pharmaceutics 2021; 13:pharmaceutics13020165. [PMID: 33513747 PMCID: PMC7910877 DOI: 10.3390/pharmaceutics13020165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 11/18/2022] Open
Abstract
Antimicrobial agent abuse poses a serious threat for future pharmacotherapy, including vaginal administration. The solution can be found in simple polymeric systems with inherent antimicrobial properties without the need to incorporate drugs, for instance alginate beads cross-linked by bivalent ions. The main goal of the presented study was to provide improvement on the well-documented cytotoxicity of Cu2+ cross-linked alginate. Alginate beads were prepared by external ionotropic gelation by cross-linking with Cu2+, Ca2+ and Zn2+ ions, separately and in mixtures. Morphological properties, swelling capacity, ion release and efficacy against the most common vaginal pathogens (C. albicans, E. coli, E. faecalis and virus strain—human herpesvirus type 1) were evaluated. The prepared particles (particle size 1455.68 ± 18.71–1756.31 ± 16.58 µm) had very good sphericity (0.86 ± 0.04–0.97 ± 0.06). In mixture samples, Cu2+ hampered second ion loading, and was also released incompletely (18.75–44.8%) compared to the single ion Cu2+ sample (71.4%). Efficacy against the selected pathogens was confirmed in almost all samples. Although anticipating otherwise, ion mixture samples did not show betterment over a Cu2+ cross-linked sample in cytotoxicity–pathogen efficacy relation. However, the desired improvement was found in a single ion Zn2+ sample whose minimal inhibition concentrations against the pathogens (0.6–6.12 mM) were close to, or in the same mathematical order as, its toxic concentration of 50 (1.891 mM). In summary, these findings combined with alginate’s biocompatibility and biodegradability give the combination solid potential in antimicrobial use.
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Affiliation(s)
- Miroslava Pavelková
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Masaryk University, Palackého 1, 612 00 Brno, Czech Republic; (M.P.); (K.K.); (S.P.); (D.V.)
| | - Jakub Vysloužil
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Masaryk University, Palackého 1, 612 00 Brno, Czech Republic; (M.P.); (K.K.); (S.P.); (D.V.)
- Correspondence: ; Tel.: +420-541-562-869
| | - Kateřina Kubová
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Masaryk University, Palackého 1, 612 00 Brno, Czech Republic; (M.P.); (K.K.); (S.P.); (D.V.)
| | - Sylvie Pavloková
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Masaryk University, Palackého 1, 612 00 Brno, Czech Republic; (M.P.); (K.K.); (S.P.); (D.V.)
| | - Dobromila Molinková
- Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1, 612 42 Brno, Czech Republic; (D.M.); (V.C.)
| | - Vladimír Celer
- Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1, 612 42 Brno, Czech Republic; (D.M.); (V.C.)
| | - Alena Pechová
- Department of Animal Breeding, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1, 612 42 Brno, Czech Republic;
| | - Josef Mašek
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic;
| | - David Vetchý
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Masaryk University, Palackého 1, 612 00 Brno, Czech Republic; (M.P.); (K.K.); (S.P.); (D.V.)
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4
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Study on the synthesis and drug-loading optimization of beta-cyclodextrin polymer microspheres containing ornidazole. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Designing, structural determination and biological effects of rifaximin loaded chitosan- carboxymethyl chitosan nanogel. Carbohydr Polym 2020; 248:116782. [PMID: 32919570 DOI: 10.1016/j.carbpol.2020.116782] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 12/25/2022]
Abstract
Due to the poor solubility and permeability of rifaximin (RFX), it is not effective against intracellular pathogens although it shows strong activity against most bacteria. To develop an effective mucoadhesive drug delivery system with a targeted release in bacterial infection site, RFX-loaded chitosan (CS)/carboxymethyl-chitosan (CMCS) nanogel was designed and systematically evaluated. FTIR, DSC, and XRD demonstrated that the nanogel was formed by interactions between the positively charged NH3+ on CS and CMCS, and the negatively charged COO on CMCS. RFX was encapsulated into the optimized nanogel in amorphous form. The nanogel was a uniform spherical shape with a mean diameter of 171.07 nm. It had excellent sustained release, strong mucin binding ability, and pH-responsive properties of quicker swelling and release at acidic pH. It showed low hemolytic ratio and high antioxidant activity. The present investigation indicated that the CS-nanogel could be potentially used as a promising bacterial responsiveness drug delivery system.
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6
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Reczyńska K, Marchwica P, Khanal D, Borowik T, Langner M, Pamuła E, Chrzanowski W. Stimuli-sensitive fatty acid-based microparticles for the treatment of lung cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110801. [PMID: 32279754 DOI: 10.1016/j.msec.2020.110801] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 09/30/2019] [Accepted: 02/29/2020] [Indexed: 01/08/2023]
Abstract
Despite recent advancements in medicine, lung cancer still lacks an effective therapy. In the present study we have decided to combine superparamagnetic iron oxide nanoparticles (SPION) with solid lipid microparticles to develop novel, stimuli-sensitive drug carriers that increase the bioavailability of the anticancer drug (paclitaxel - PAX) through guided accumulation directly at the tumour site and controlled drug delivery. SPION and PAX-loaded microparticles (MPs) were fabricated from lauric acid (LAU) and a mixture of myristic and palmitic acids (MYR/PAL) using hot oil-in-water emulsification method. MP size, surface properties, melting temperature and magnetic mobility were evaluated along with their in vitro efficacy against malignant lung epithelial cells (A549). MPs were spherical in shape with the average particle size between 2 and 3.5 μm and responded to external magnetic field up to the distance of 15 mm. MPs were effectively internalised by the cells. Unloaded or NP-loaded MPs were cytocompatible with A549 cells, while NP + PAX-loaded MPs significantly decreased cell viability and effectively suppressed colony formation. The developed stimuli-sensitive, inhalable MPs have shown promising results as PAX carriers for controlled pulmonary delivery for the treatment of lung cancer.
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Affiliation(s)
- Katarzyna Reczyńska
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland; The University of Sydney, Faculty of Pharmacy, Pharmacy Building A15, Sydney, NSW 2006, Australia
| | - Patrycja Marchwica
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Dipesh Khanal
- The University of Sydney, Faculty of Pharmacy, Pharmacy Building A15, Sydney, NSW 2006, Australia
| | - Tomasz Borowik
- Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Marek Langner
- Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Elżbieta Pamuła
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Wojciech Chrzanowski
- The University of Sydney, Faculty of Pharmacy, Pharmacy Building A15, Sydney, NSW 2006, Australia.
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8
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Akl M, Kartal-Hodzic A, Suutari T, Oksanen T, Montagner IM, Rosato A, Ismael HR, Afouna MI, Caliceti P, Yliperttula M, Samy AM, Mastrotto F, Salmaso S, Viitala T. Real-Time Label-Free Targeting Assessment and in Vitro Characterization of Curcumin-Loaded Poly-lactic- co-glycolic Acid Nanoparticles for Oral Colon Targeting. ACS OMEGA 2019; 4:16878-16890. [PMID: 31646234 PMCID: PMC6796886 DOI: 10.1021/acsomega.9b02086] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 09/12/2019] [Indexed: 05/17/2023]
Abstract
The exploitation of curcumin for oral disease treatment is limited by its low solubility, poor bioavailability, and low stability. Surface-functionalized poly-lactic-co-glycolic acid (PLGA) nanoparticles (NPs) have shown promising results to ameliorate selective delivery of drugs to the gastro-intestinal tract. In this study, curcumin-loaded PLGA NPs (C-PLGA NPs) of about 200 nm were surface-coated with chitosan (CS) for gastro-intestinal mucosa adhesion, wheat germ agglutinin (WGA) for colon targeting or GE11 peptide for tumor colon targeting. Spectrometric and zeta potential analyses confirmed the successful functionalization of the C-PLGA NPs. Real-time label-free assessment of the cell membrane-NP interactions and NP cell uptake were performed by quartz crystal microbalance coupled with supported lipid bilayers and by surface plasmon resonance coupled with living cells. The study showed that CS-coated C-PLGA NPs interact with cells by the electrostatic mechanism, while both WGA- and GE11-coated C-PLGA NPs interact and are taken up by cells by specific active mechanisms. In vitro cell uptake studies corroborated the real-time label-free assessment by yielding a curcumin cell uptake of 7.3 ± 0.3, 13.5 ± 1.0, 27.3 ± 4.9, and 26.0 ± 1.3 μg per 104 HT-29 cells for noncoated, CS-, WGA-, and GE11-coated C-PLGA NPs, respectively. Finally, preliminary in vivo studies showed that the WGA-coated C-PLGA NPs efficiently accumulate in the colon after oral administration to healthy Balb/c mice. In summary, the WGA- and GE11-coated C-PLGA NPs displayed high potential for application as active targeted carriers for anticancer drug delivery to the colon.
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Affiliation(s)
- Mohamed
A. Akl
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
- Department
of Pharmaceutics and Ind. Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, 11884 Cairo, Egypt
| | - Alma Kartal-Hodzic
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
| | - Teemu Suutari
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
| | - Timo Oksanen
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
| | | | - Antonio Rosato
- Veneto
Institute of Oncology IOV-IRCCS, 35128 Padua, Italy
- Department of Surgery, Oncology and Gastroentrology and Department of Pharmaceutical and
Pharmacological Sciences, University of
Padova, 35131 Padova, Italy
| | - Hatem R. Ismael
- Department
of Pharmaceutics and Ind. Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, 11884 Cairo, Egypt
| | - Mohsen I. Afouna
- Department
of Pharmaceutics and Ind. Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, 11884 Cairo, Egypt
| | - Paolo Caliceti
- Department of Surgery, Oncology and Gastroentrology and Department of Pharmaceutical and
Pharmacological Sciences, University of
Padova, 35131 Padova, Italy
| | - Marjo Yliperttula
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
- Department of Surgery, Oncology and Gastroentrology and Department of Pharmaceutical and
Pharmacological Sciences, University of
Padova, 35131 Padova, Italy
| | - Ahmed M. Samy
- Department
of Pharmaceutics and Ind. Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, 11884 Cairo, Egypt
| | - Francesca Mastrotto
- Department of Surgery, Oncology and Gastroentrology and Department of Pharmaceutical and
Pharmacological Sciences, University of
Padova, 35131 Padova, Italy
| | - Stefano Salmaso
- Department of Surgery, Oncology and Gastroentrology and Department of Pharmaceutical and
Pharmacological Sciences, University of
Padova, 35131 Padova, Italy
| | - Tapani Viitala
- Drug
Research Program, Division of Pharmaceutical Biosciences, Faculty
of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
- E-mail: . Phone: +358504154529
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Sumaila M, Ramburrun P, Kumar P, Choonara YE, Pillay V. Lipopolysaccharide Polyelectrolyte Complex for Oral Delivery of an Anti-tubercular Drug. AAPS PharmSciTech 2019; 20:107. [PMID: 30746572 DOI: 10.1208/s12249-019-1310-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/10/2019] [Indexed: 12/28/2022] Open
Abstract
Anti-tuberculosis drug delivery has remained a challenge due to inconsistent bioavailability and inadequate sustained-release properties leading to treatment failure. To resolve these drawbacks, a lipopolysaccharide polyelectrolyte complex (PEC) encapsulated with rifampicin (RIF) (as the model drug) was fabricated, using the solvent injection technique (SIT), with soy lecithin (SLCT), and low-molecular-weight chitosan (LWCT). The average particle size and surface charge of RIF-loaded PEC particulates was 151.6 nm and + 33.0 nm, respectively, with noted decreased particle size and surface charge following increase in SLCT-LWCT mass ratio. Encapsulation efficiency (%EE) and drug-loading capacity (%LC) was 64.25% and 5.84%, respectively. Increase in SLCT-LWCT mass ratio significantly increased %EE with a marginal reduction in %LC. In vitro release studies showed a sustained-release profile for the PEC particulate tablet over 24 h (11.4% cumulative release) where the dominant release mechanism involved non-Fickian anomalous transport shifting towards super case II release as SLCT ratios increased (6.4% cumulative release). PEC-tablets prepared without SIT presented with rapid Fickian-diffusion-based drug release with up to 90% RIF release within 4 h. Ex vivo permeability studies revealed that lipopolysaccharide PEComplexation significantly increased the permeability of RIF by ~ 2-fold within the 8-h study period. These results suggest successful encapsulation of RIF within a PEC structure while imparting increased amorphic regions, as indicated by x-ray diffraction, for potential benefits in improved drug dissolution, bioavailability, and dosing.
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Vijayavani S, Vidyavathi M. Azadirachita indica gum based sildenafil citrate mucoadhesive microspheres – Design and optimization. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zelenková T, Onnainty R, Granero GE, Barresi AA, Fissore D. Use of microreactors and freeze-drying in the manufacturing process of chitosan coated PCL nanoparticles. Eur J Pharm Sci 2018; 119:135-146. [DOI: 10.1016/j.ejps.2018.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 12/14/2022]
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Zelenková T, Mora MJ, Barresi AA, Granero GE, Fissore D. On the Production of Chitosan-Coated Polycaprolactone Nanoparticles in a Confined Impinging Jet Reactor. J Pharm Sci 2018; 107:1157-1166. [DOI: 10.1016/j.xphs.2017.11.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/07/2017] [Accepted: 11/28/2017] [Indexed: 01/18/2023]
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Inexpensive Apparatus for Fabricating Microspheres for 5-Fluorouracil Controlled Release Systems. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2018. [DOI: 10.1155/2018/2340249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to develop an inexpensive apparatus for fabricating microspheres, based on chitosan, for 5-fluorouracil (5-FU) controlled release. Chitosan microspheres were prepared by precipitation method and the effects of manufacturing parameters (injection and airflow rates) on size distribution microspheres were analyzed by optical and scanning electron microscopy. The results show that the manufacturing parameters, injection and airflow rates, determine the microsphere size distribution. By modulating these parameters, it was possible to produce chitosan microspheres as small as 437 ± 44 μm and as large as 993 ± 18 μm. Chitosan microspheres loaded with 5-FU were also produced using the experimental equipment. The obtained microspheres presented 5-FU controlled release, indicating that the microspheres can be used orally, since they are capable of crossing the stomach barrier and of continuing with the process of 5-FU release.
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Lee JS, Suh JW, Kim ES, Lee HG. Preparation and Characterization of Mucoadhesive Nanoparticles for Enhancing Cellular Uptake of Coenzyme Q10. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8930-8937. [PMID: 28933847 DOI: 10.1021/acs.jafc.7b03300] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The mucoadhesive nanoparticles (NPs) for oral delivery of coenzyme Q10 (CoQ10) were prepared using natural mucoadhesive polysaccharides, chitosan (CS), and dextran sulfate sodium salt (DS) in order to improve the solubility, cellular uptake, and thermo- and photostability of CoQ10. CoQ10-loaded NPs were prepared in the range of 340-450 nm with an entrapment efficiency of 60-98%. The mucoadhesiveness and cellular uptake of NPs were evaluated by measuring the amount of mucin adsorbed on NPs and CoQ10 absorbed in Caco-2 cells, respectively. CS/DS NPs had higher mucoadhesive strength than CS/sodium triphosphate pentabasic NPs (control group). Moreover, the solubility, cellular uptake, thermo- and photostability of CS/DS NPs were significantly improved compared with non-nanoencapsulated free CoQ10. Particularly, CS/DS NPs prepared with 0.5 mg/mL of CS and DS produced the highest mucoadhesiveness, solubility, cellular uptake, and cellular antioxidant activity. Thus, mucoadhesive CS/DS NPs may be an effective oral delivery platform for improving bioavailability of CoQ10.
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Affiliation(s)
- Ji-Soo Lee
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Ji Woon Suh
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Eun Suh Kim
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
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Mendes C, Buttchevitz A, Kruger JH, Caon T, Benedet PO, Lemos-Senna EMT, Silva MAS. Chitosan microencapsulation of the dispersed phase of an O/W nanoemulsion to hydrochlorothiazide delivery. J Microencapsul 2017; 34:611-622. [PMID: 28847195 DOI: 10.1080/02652048.2017.1373155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In view of biopharmaceutical limitations of hydrochlorothiazide (HCTZ), Trojan-type mucoadhesive systems were proposed, aiming to improve HCTZ pharmacological properties by modulating its release. Nanoemulsions were formed spontaneously by combining medium-chain triglycerides (Lipoid® S75 and Pluronic® F68) and high encapsulation efficiency was obtained. The mucoadhesive properties were provided by chitosan and microencapsulation of nanoemulsions in spray-dryer was successfully achieved by using Aerosil® as wall material. The rapid redispersion of nanoemulsion in simulated fluids led to a fast and complete release of HCTZ in gastric medium. The pharmacodynamics of HCTZ was improved, extending the diuretic activity. Once a simple and low-energy method contributed to obtain stable mucoadhesive nanoemulsions, advantages in terms of production could also be achieved, allowing easy scaling up. This novel mucoadhesive Trojan particulate system of HCTZ showed to be a promising approach to overcome limitations in terms of absorption and consequently improve the therapeutic efficacy.
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Affiliation(s)
- Cassiana Mendes
- a Post-graduation Program in Pharmaceutical Sciences, Quality Control Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil.,b Departamento de Química, Grupo de Estudos em Materiais Poliméricos (POLIMAT) , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Aline Buttchevitz
- a Post-graduation Program in Pharmaceutical Sciences, Quality Control Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Jéssica Henriques Kruger
- a Post-graduation Program in Pharmaceutical Sciences, Quality Control Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Thiago Caon
- a Post-graduation Program in Pharmaceutical Sciences, Quality Control Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | | | - Elenara Maria Teixeira Lemos-Senna
- d Department of Pharmaceutical Sciences, Pharmaceutical Technology Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Marcos Antônio Segatto Silva
- a Post-graduation Program in Pharmaceutical Sciences, Quality Control Laboratory , Universidade Federal de Santa Catarina , Florianópolis , Brazil
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Integration of polysaccharide-thermoprotectant formulations for microencapsulation of Lactobacillus plantarum, appraisal of survivability and physico-biochemical properties during storage of spray dried powders. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.11.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Singh R, Parihar P, Singh M, Bajguz A, Kumar J, Singh S, Singh VP, Prasad SM. Uncovering Potential Applications of Cyanobacteria and Algal Metabolites in Biology, Agriculture and Medicine: Current Status and Future Prospects. Front Microbiol 2017; 8:515. [PMID: 28487674 PMCID: PMC5403934 DOI: 10.3389/fmicb.2017.00515] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 03/13/2017] [Indexed: 12/05/2022] Open
Abstract
Cyanobacteria and algae having complex photosynthetic systems can channelize absorbed solar energy into other forms of energy for production of food and metabolites. In addition, they are promising biocatalysts and can be used in the field of "white biotechnology" for enhancing the sustainable production of food, metabolites, and green energy sources such as biodiesel. In this review, an endeavor has been made to uncover the significance of various metabolites like phenolics, phytoene/terpenoids, phytols, sterols, free fatty acids, photoprotective compounds (MAAs, scytonemin, carotenoids, polysaccharides, halogenated compounds, etc.), phytohormones, cyanotoxins, biocides (algaecides, herbicides, and insecticides) etc. Apart from this, the importance of these metabolites as antibiotics, immunosuppressant, anticancer, antiviral, anti-inflammatory agent has also been discussed. Metabolites obtained from cyanobacteria and algae have several biotechnological, industrial, pharmaceutical, and cosmetic uses which have also been discussed in this review along with the emerging technology of their harvesting for enhancing the production of compounds like bioethanol, biofuel etc. at commercial level. In later sections, we have discussed genetically modified organisms and metabolite production from them. We have also briefly discussed the concept of bioprocessing highlighting the functioning of companies engaged in metabolites production as well as their cost effectiveness and challenges that are being addressed by these companies.
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Affiliation(s)
- Rachana Singh
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
| | - Parul Parihar
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
| | - Madhulika Singh
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
| | - Andrzej Bajguz
- Faculty of Biology and Chemistry, Institute of Biology, University of BialystokBialystok, Poland
| | - Jitendra Kumar
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
| | - Samiksha Singh
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
| | - Vijay P. Singh
- Department of Botany, Govt. Ramanuj Pratap Singhdev Post-Graduate CollegeBaikunthpur, Koriya, India
| | - Sheo M. Prasad
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of AllahabadAllahabad, India
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Oh S, Borrós S. Mucoadhesion vs mucus permeability of thiolated chitosan polymers and their resulting nanoparticles using a quartz crystal microbalance with dissipation (QCM-D). Colloids Surf B Biointerfaces 2016; 147:434-441. [DOI: 10.1016/j.colsurfb.2016.08.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 07/16/2016] [Accepted: 08/18/2016] [Indexed: 12/12/2022]
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Mucoadhesive microparticles for local treatment of gastrointestinal diseases. Eur J Pharm Biopharm 2016; 105:156-65. [DOI: 10.1016/j.ejpb.2016.06.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 05/31/2016] [Accepted: 06/09/2016] [Indexed: 11/21/2022]
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Suh JW, Lee JS, Ko S, Lee HG. Preparation and Characterization of Mucoadhesive Buccal Nanoparticles Using Chitosan and Dextran Sulfate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5384-5388. [PMID: 27222213 DOI: 10.1021/acs.jafc.6b00849] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of this study was to formulate buccal mucoadhesive nanoparticles (NPs) using the natural mucoadhesive polymers. The natural mucoadhesive polymers chitosan (CS) and dextran sulfate sodium salt (DS) were used to prepare mucoadhesive NPs using the ionic gelation method. As the molecular weight of DS decreased, the amount of mucin and the number of buccal cells adsorbed on DS increased. The CS/DS NPs ranged from 100 to 200 nm in diameter. The adhesive interactions of CS/DS NPs with mucin were not significantly different from those of CS/sodium triphosphate pentabasic (TPP) NPs; however, CS/DS NPs exhibited 5 times greater mucoadhesive activity to buccal cells compared to control CS/TPP NPs in ex vivo adhesion tests. These results indicate that the buccal mucoadhesive properties of NPs can be improved using natural mucoadhesive polymers.
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Affiliation(s)
- Ji Woon Suh
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Ji-Soo Lee
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Sanghoon Ko
- Department of Food Science and Technology, Sejong University , 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Republic of Korea
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang University , 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
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Khorasani AC, Shojaosadati SA. Bacterial nanocellulose-pectin bionanocomposites as prebiotics against drying and gastrointestinal condition. Int J Biol Macromol 2016; 83:9-18. [DOI: 10.1016/j.ijbiomac.2015.11.041] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Revised: 10/22/2015] [Accepted: 11/12/2015] [Indexed: 12/14/2022]
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Siddhapura K, Harde H, Jain S. Immunostimulatory effect of tetanus toxoid loaded chitosan nanoparticles following microneedles assisted immunization. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:213-22. [DOI: 10.1016/j.nano.2015.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/15/2015] [Accepted: 10/14/2015] [Indexed: 11/29/2022]
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Wu Z, Hou J, Wang Y, Chai M, Xiong Y, Lu W, Pan J. Preparation and evaluation of amoxicillin loaded dual molecularly imprinted nanoparticles for anti- Helicobacter pylori therapy. Int J Pharm 2015; 496:1006-14. [DOI: 10.1016/j.ijpharm.2015.10.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/04/2015] [Accepted: 10/27/2015] [Indexed: 12/14/2022]
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Patil BS, Mahajan HS, Surana SJ. Preparation and evaluation of flutamide mucoadhesive microparticles loaded poloxamer suppositories. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2015. [DOI: 10.1007/s40005-015-0217-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tiwari P. Recent Trends in Therapeutic Approaches for Diabetes Management: A Comprehensive Update. J Diabetes Res 2015; 2015:340838. [PMID: 26273667 PMCID: PMC4530263 DOI: 10.1155/2015/340838] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 04/30/2015] [Accepted: 05/01/2015] [Indexed: 01/09/2023] Open
Abstract
Diabetes highlights a growing epidemic imposing serious social economic crisis to the countries around the globe. Despite scientific breakthroughs, better healthcare facilities, and improved literacy rate, the disease continues to burden several sections, especially middle and low income countries. The present trends indicate the rise in premature death, posing a major threat to global development. Scientific and technological advances have witnessed the development of newer generation of drugs like sulphonylureas, biguanides, alpha glucosidase inhibitors, and thiazolidinediones with significant efficacy in reducing hyperglycemia. Recent approaches in drug discovery have contributed to the development of new class of therapeutics like Incretin mimetics, Amylin analogues, GIP analogs, Peroxisome proliferator activated receptors, and dipeptidyl peptidase-4 inhibitor as targets for potential drugs in diabetes treatment. Subsequently, the identification and clinical investigation of bioactive substances from plants have revolutionized the research on drug discovery and lead identification for diabetes management. With a focus on the emerging trends, the review article explores the current statistical prevalence of the disease, discussing the benefits and limitations of the commercially available drugs. Additionally, the critical areas in clinical diabetology are discussed, with respect to prospects of statins, nanotechnology, and stem cell technology as next generation therapeutics and why the herbal formulations are consistently popular choice for diabetes medication and management.
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Affiliation(s)
- Pragya Tiwari
- Department of Metabolic and Structural Biology, Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. Box CIMAP, Lucknow, Uttar Pradesh 226015, India
- Molecular Biology and Biotechnology Division, ICAR-National Bureau of Fish Genetic Resources, Canal Ring Road, P.O. Dilkusha, Lucknow, Uttar Pradesh 226002, India
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Songsurang K, Siraleartmukul K, Muangsin N. Mucoadhesive drug carrier based on functional-modified cellulose as poorly water-soluble drug delivery system. J Microencapsul 2015; 32:450-9. [DOI: 10.3109/02652048.2015.1046516] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Silk fibroin nanoparticle as a novel drug delivery system. J Control Release 2015; 206:161-76. [DOI: 10.1016/j.jconrel.2015.03.020] [Citation(s) in RCA: 242] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 01/12/2023]
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Preisig D, Weingartner M, Varum FJO, Bravo R, Alles R, Huwyler J, Puchkov M. Marker-ion analysis for quantification of mucoadhesivity of microparticles in particle-retention assays. Int J Pharm 2015; 487:157-66. [PMID: 25882011 DOI: 10.1016/j.ijpharm.2015.04.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/07/2015] [Accepted: 04/09/2015] [Indexed: 12/01/2022]
Abstract
The objective of the present work was to develop an improved method to quantify particle retention on mucosal tissue under dynamic flow conditions with simultaneous determination of drug dissolution. The principle was to dissolve the collected inert carrier material and quantify specific marker ions by reliable analytical methods. The mucoadhesive model particles consisted of drug-loaded porous calcium carbonate microcarriers coated with chitosan, and quantification of calcium ions by capillary electrophoresis enabled to determine particle-retention kinetics on colonic mucosal tissue. The method was validated by image analysis, and the particle-retention assay was successfully applied to granulate material (125-250 mm) and small particles (<90 μm) with mucoadhesive properties. Particle retention on colonic mucosa was improved by increasing the chitosan content, demonstrating the sensitivity and usefulness of marker-ion analysis for quantification of detached particles. Furthermore, we showed that drug dissolution from mucoadhesive microparticles followed comparable kinetics in the particle-retention assay and the standard USP IV method. Our findings are helpful for the development of micro-sized colonic drug delivery systems, in particular for optimization of mucoadhesive properties and sustained drug release kinetics of porous drug carriers.
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Affiliation(s)
- Daniel Preisig
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
| | - Michael Weingartner
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Felipe J O Varum
- Tillotts Pharma AG, Baslerstrasse 15, 4310 Rheinfelden, Switzerland.
| | - Roberto Bravo
- Tillotts Pharma AG, Baslerstrasse 15, 4310 Rheinfelden, Switzerland.
| | - Rainer Alles
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
| | - Jörg Huwyler
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
| | - Maxim Puchkov
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
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Mazzarino L, Borsali R, Lemos-Senna E. Mucoadhesive films containing chitosan-coated nanoparticles: a new strategy for buccal curcumin release. J Pharm Sci 2014; 103:3764-3771. [PMID: 25187001 DOI: 10.1002/jps.24142] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 06/25/2014] [Accepted: 08/06/2014] [Indexed: 01/18/2023]
Abstract
Mucoadhesive films containing curcumin-loaded nanoparticles were developed, aiming to prolong the residence time of the dosage form in the oral cavity and to increase drug absorption through the buccal mucosa. Films were prepared by the casting method after incorporation of curcumin-loaded chitosan-coated polycaprolactone nanoparticles into plasticized chitosan solutions. Different molar masses of mucoadhesive polysaccharide chitosan and concentrations of plasticizer glycerol were used to optimize the preparation conditions. Films obtained using medium and high molar mass chitosan were found to be homogeneous and flexible. Curcumin-loaded nanoparticles were uniformly distributed on the film surface, as evidenced by atomic force microscopy and high-resolution field-emission gun scanning electron microscopy (FEG-SEM) images. Analyses of film cross sections using FEG-SEM demonstrate the presence of nanoparticles inside the films. In addition, films proved to have a good rate of hydration in simulated saliva solution, displaying a maximum swelling of around 80% and in vitro prolonged-controlled delivery of curcumin. These results indicate that the mucoadhesive films containing nanoparticles offer a promising approach for buccal delivery of curcumin, which may be particularly useful in the treatment of periodontal diseases that require a sustained drug delivery.
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Affiliation(s)
- Letícia Mazzarino
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina (UFSC), Campus Universitário Trindade, Florianópolis 88040-900, SC, Brazil.
| | - Redouane Borsali
- Centre de Recherches sur les Macromolécules Végétales (CERMAV, UPR-CNRS 5301), Université Grenoble Alpes, Grenoble Cedex 9, F-38041, France.
| | - Elenara Lemos-Senna
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina (UFSC), Campus Universitário Trindade, Florianópolis 88040-900, SC, Brazil
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Adebisi AO, Conway BR. Lectin-conjugated microspheres for eradication of Helicobacter pylori infection and interaction with mucus. Int J Pharm 2014; 470:28-40. [DOI: 10.1016/j.ijpharm.2014.04.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/29/2014] [Accepted: 04/30/2014] [Indexed: 11/26/2022]
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Abstract
INTRODUCTION Oral delivery of therapeutics, particularly protein-based pharmaceutics, is of great interest for safe and controlled drug delivery for patients. Hydrogels offer excellent potential as oral therapeutic systems due to inherent biocompatibility, diversity of both natural and synthetic material options and tunable properties. In particular, stimuli-responsive hydrogels exploit physiological changes along the intestinal tract to achieve site-specific, controlled release of protein, peptide and chemotherapeutic molecules for both local and systemic treatment applications. AREAS COVERED This review provides a wide perspective on the therapeutic use of hydrogels in oral delivery systems. General features and advantages of hydrogels are addressed, with more considerable focus on stimuli-responsive systems that respond to pH or enzymatic changes in the gastrointestinal environment to achieve controlled drug release. Specific examples of therapeutics are given. Last, in vitro and in vivo methods to evaluate hydrogel performance are discussed. EXPERT OPINION Hydrogels are excellent candidates for oral drug delivery, due to the number of adaptable parameters that enable controlled delivery of diverse therapeutic molecules. However, further work is required to more accurately simulate physiological conditions and enhance performance, which is important to achieve improved bioavailability and increase commercial interest.
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Affiliation(s)
- Lindsey A Sharpe
- The University of Texas, Department of Biomedical Engineering , Austin, TX 78712 , USA +1 512 471 6644 ; +1 512 471 8227 ;
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Mazzarino L, Otsuka I, Halila S, Bubniak LDS, Mazzucco S, Santos-Silva MC, Lemos-Senna E, Borsali R. Xyloglucan-block
-Poly(ϵ-Caprolactone) Copolymer Nanoparticles Coated with Chitosan as Biocompatible Mucoadhesive Drug Delivery System. Macromol Biosci 2014; 14:709-19. [DOI: 10.1002/mabi.201300465] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 11/29/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Letícia Mazzarino
- Departamento de Ciências Farmacêuticas; Centro de Ciências da Saúde; Universidade Federal de Santa Catarina (UFSC); Campus Universitário Trindade; 88040-900 Florianópolis SC Brazil
| | - Issei Otsuka
- Centre de Recherches sur les Macromolécules Végétales (CERMAV, UPR-CNRS 5301); Université Grenoble Alpes; BP 53, F 38041 Grenoble Cedex 9 France
| | - Sami Halila
- Centre de Recherches sur les Macromolécules Végétales (CERMAV, UPR-CNRS 5301); Université Grenoble Alpes; BP 53, F 38041 Grenoble Cedex 9 France
| | - Lorena dos Santos Bubniak
- Departamento de Análises Clínicas; Centro de Ciências da Saúde; Universidade Federal de Santa Catarina (UFSC); Campus Universitário Trindade; 88040-900 Florianópolis SC Brazil
| | - Suelen Mazzucco
- Departamento de Análises Clínicas; Centro de Ciências da Saúde; Universidade Federal de Santa Catarina (UFSC); Campus Universitário Trindade; 88040-900 Florianópolis SC Brazil
| | - Maria C. Santos-Silva
- Departamento de Análises Clínicas; Centro de Ciências da Saúde; Universidade Federal de Santa Catarina (UFSC); Campus Universitário Trindade; 88040-900 Florianópolis SC Brazil
| | - Elenara Lemos-Senna
- Departamento de Ciências Farmacêuticas; Centro de Ciências da Saúde; Universidade Federal de Santa Catarina (UFSC); Campus Universitário Trindade; 88040-900 Florianópolis SC Brazil
| | - Redouane Borsali
- Centre de Recherches sur les Macromolécules Végétales (CERMAV, UPR-CNRS 5301); Université Grenoble Alpes; BP 53, F 38041 Grenoble Cedex 9 France
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Park CG, Kim MJ, Park M, Choi SY, Lee SH, Lee JE, Shin GS, Park KH, Choy YB. Nanostructured mucoadhesive microparticles for enhanced preocular retention. Acta Biomater 2014; 10:77-86. [PMID: 23978409 DOI: 10.1016/j.actbio.2013.08.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/02/2013] [Accepted: 08/14/2013] [Indexed: 01/22/2023]
Abstract
We describe nanostructured microparticles (NMs) containing a mucoadhesive polymer for enhanced preocular retention and consider them as potential carriers of drugs to the eye. These NMs are each composed of entangled nanofibers to give an enlarged specific surface area, and thus can better adhere to the preocular mucus surface. This physical design allows the microparticles still to be composed mainly of a wall material, poly(lactic-co-glycolic acid), as required for controlled drug delivery, while the effects of an additive, mucoadhesive material, polyethylene glycol, can be synergistically improved via the nanostructured morphology. Thus, when formulated in a dry tablet dosage form, the NMs in this work show more than a 10-fold increase in preocular retention in vivo compared to conventional spherical microparticles. Therefore, we conclude that these mucoadhesive NMs can reside on the preocular surface for a prolonged period, and thus appear to be a promising system for topical drug delivery to the eye.
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Affiliation(s)
- Chun Gwon Park
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul 152-742, Republic of Korea
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Dmitrovic R, Kunselman AR, Legro RS. Sildenafil citrate in the treatment of pain in primary dysmenorrhea: a randomized controlled trial. Hum Reprod 2013; 28:2958-65. [PMID: 23925396 DOI: 10.1093/humrep/det324] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Is a vaginal preparation of sildenafil citrate capable of alleviating acute menstrual pain in patients with primary dysmenorrhea (PD)? SUMMARY ANSWER A vaginal preparation of sildenafil citrate is capable of alleviating acute menstrual pain in patients with PD with no observed adverse effects. WHAT IS KNOWN ALREADY Oral preparations of nitric oxide (NO) donor drugs augment relaxant effects of NO on myometrial cells, reverse the vasoconstriction caused by prostaglandins and successfully alleviate pain, but the incidence of side effects is too high for routine clinical use. Sildenafil citrate inhibits type 5-specific phosphodiesterase (PDE5), thus preventing the degradation of cyclic guanosine monophosphate (cGMP) in the muscle and augmenting the vasodilatory effects of NO. Therefore, by inhibiting PDE5, the tissue remains relaxed and more blood can circulate through. It has been used previously in a vaginal form with no observed side effects, and it enhances endometrial blood flow. STUDY DESIGN, SIZE, DURATION A double-blind, randomized, controlled trial comparing vaginal preparation of sildenafil citrate (100 mg single dose) to a placebo in 62 PD patients at the time of painful menstruation was conducted. The primary outcome was total pain relief over 4 consecutive hours (TOPAR4) comparing sildenafil citrate to placebo, where higher TOPAR4 scores represent better pain relief. Secondary outcomes were pain relief as measured by the visual analog scale (VAS) and uterine artery pulsatility index (PI). Subjects were recruited from December 2007 to January 2011. The trial was stopped due to closeout of the funding for the study. PARTICIPANTS, SETTINGS, METHODS Participants were women in good health, were aged 18-35 years and suffered from moderate to severe PD. They were randomized to either vaginal placebo or 100 mg vaginal sildenafil citrate in a 1:1 ratio using random permuted blocks having a block size of 4. At baseline and 1, 2, 3, and 4 h post-treatment, patients were asked to provide assessment of their degree of pain using two scales: (i) pain on the 5-level ordinal scale used for TOPAR4 calculation and (ii) pain level on the VAS. The study ended 4 h after treatment initiation. MAIN RESULTS AND THE ROLE OF CHANCE Twenty-five subjects completed the study. Using the TOPAR4 score, the sildenafil citrate group had significantly better pain relief compared with the placebo group [mean (SD): 11.9 (3.2) versus 6.4 (2.1), respectively; difference in means = 5.3; 95% CI: (2.9,7.6); P < 0.001)]. On the VAS, sildenafil citrate provided better pain relief than placebo at each time point. At the 2-h time point, the PI was significantly lower in the sildenafil citrate group compared with the placebo group [mean (SD): 1.6 (0.6) versus 2.3 (0.5), respectively; difference in means = -0.7; 95% CI: (-1.2, -0.1); P = 0.01)]. LIMITATIONS, REASONS FOR CAUTION Since we did not meet our sample size due to the loss of funding and could not confirm our primary hypothesis, larger studies of longer duration, likely multi-center, are needed to confirm the findings from this study. WIDER IMPLICATIONS OF THE FINDINGS A number of medications have been investigated to improve the treatment options for PD, but most have proven unsuccessful or to have an unfavorable risk/benefit ratio. Since PD is a condition that most women suffer from and seek treatment for at some point in their lives, our study offers hope that vaginal sildenafil citrate is a safe and effective option for patients who do not desire or are unresponsive to treatments now available on the market. STUDY FUNDING/COMPETING INTERESTS Funding for this study was provided by National Institutes of Health (NIH) grants RO3 TW007438 and K24 HD01476. The authors report no relevant conflicts of interest. TRIAL REGISTRATION NUMBER NCT00123162 (Clinical trials.gov).
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Affiliation(s)
- R Dmitrovic
- BetaPlus Center for Reproductive Medicine, Avenija Veceslava Holjevca 23, 10000 Zagreb, Croatia and
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Kumar K, Dhawan N, Sharma H, Vaidya S, Vaidya B. Bioadhesive polymers: Novel tool for drug delivery. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2013; 42:274-83. [DOI: 10.3109/21691401.2013.815194] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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An approach to a cold chain free oral cholera vaccine: in vitro and in vivo characterization of Vibrio cholerae gastro-resistant microparticles. Int J Pharm 2013; 448:247-58. [DOI: 10.1016/j.ijpharm.2013.02.057] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 02/20/2013] [Accepted: 02/27/2013] [Indexed: 11/19/2022]
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Gaspar MC, Couet W, Olivier JC, Pais AACC, Sousa JJS. Pseudomonas aeruginosa infection in cystic fibrosis lung disease and new perspectives of treatment: a review. Eur J Clin Microbiol Infect Dis 2013; 32:1231-52. [DOI: 10.1007/s10096-013-1876-y] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 04/01/2013] [Indexed: 12/20/2022]
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Nayak AK, Das B, Maji R. Gastroretentive hydrodynamically balanced systems of ofloxacin: In vitro evaluation. Saudi Pharm J 2013; 21:113-7. [PMID: 23960825 PMCID: PMC3744977 DOI: 10.1016/j.jsps.2011.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 11/08/2011] [Indexed: 11/29/2022] Open
Abstract
Hydrodynamically balanced systems (HBSs) of ofloxacin were prepared using lactose, HPMC K4M, PVP K 30, and liquid paraffin, which may increase the mean residence time in the gastrointestinal tract, and may be able to provide maximum drug at the site of absorption to improve oral bioavailability. All these formulated HBS capsules were floated well over 6 h with no floating lag time. They also showed sustained drug release over 6 h. Time for 50% release of ofloxacin was within the range, 2.47 ± 0.02 to 3.07 ± 0.08 h. The in vitro drug release from these HBS capsules was dependent on HPMC K4M, PVP K 30, and liquid paraffin content. The drug release pattern of these HBS capsules containing ofloxacin followed the Higuchi model with the anomalous transport mechanism.
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Affiliation(s)
- Amit Kumar Nayak
- Department of Pharmaceutics, Seemanta Institute of Pharmaceutical Sciences, Mayurbhanj 757086, Orissa, India
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Veerareddy PR, Tedla S, Banda SR, Bandari S, Jukanti R. Preparation and evaluation of mucoadhesive cefdinir microcapsules. J Adv Pharm Technol Res 2012; 2:115-20. [PMID: 22171303 PMCID: PMC3217697 DOI: 10.4103/2231-4040.82955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The mucoadhesive microcapsules were prepared by using various concentrations of three different mucoadhesive polymers, namely, chitosan, Carbopol 934P, and methyl cellulose as wall materials and cefdinir as the core material employing orificeionic gelation method. The prepared microcapsules were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectrometry (FT-IR). The prepared microcapsules were found to be spherical with particle size ranging from 765±20 to 985±10 μm and encapsulation efficiencies in the range of 55%-92%. The formulation containing Carbopol 934P as mucoadhesive polymer was found to be best with particle size 946±10 μm. The ex vivo wash-off test showed that the mucoadhesion after 1 h was 80% and the in vitro drug release was extended for more than 12 h. FT-IR spectra indicate that there was no interaction between drug and the polymers used in the formulation. Cefdinir is better absorbed from the upper part of the gastrointestinal tract, it suffers from low oral bioavailability (20-30%), shorter biological half-life (1-2 h), and less transit time. Thus, it can be concluded that microcapsules prepared using Carbopol 934P have promising properties for use as mucoadhesive carrier to increase the residence time of cefdinir.
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Affiliation(s)
- Prabhakar Reddy Veerareddy
- Department of Pharmaceutics, St. Peter's Institute of Pharmaceutical Sciences, Vidyanagar, Hanamkonda, Warangal, Andhra Pradesh, India
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Rapolu K, Sanka K, Vemula PK, Aatipamula V, Mohd AB, Diwan PV. Optimization and characterization of gastroretentive floating drug delivery system using Box-Behnken design. Drug Dev Ind Pharm 2012; 39:1928-35. [PMID: 22762132 DOI: 10.3109/03639045.2012.699068] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT One among many strategies to prolong gastric residence time and improve local effect of the metronidazole in stomach to eradicate Helicobacter pylori in the treatment of peptic ulcer was floating drug delivery system particularly effervescent gastroretentive tablets. OBJECTIVE The objective of this study was to prepare and evaluate, effervescent floating drug delivery system of a model drug, metronidazole. METHODS Effervescent floating drug delivery tablets were prepared by wet granulation method. A three-factor, three levels Box-Behnken design was adopted for the optimization. The selected independent variables were amount of hydroxypropyl methylcellulose K 15M (X1), sodium carboxy methylcellulose (X2) and NaHCO3 (X3). The dependent variables were floating lag time (YFLT), cumulative percentage of metronidazole released at 6th h (Y6) and cumulative percentage of metronidazole released at 12th h (Y12). Physical properties, drug content, in vitro floating lag time, total floating time and drug release behavior were assessed. RESULTS YFLT range was found to be from 1.02 to 12.07 min. The ranges of other responses, Y6 and Y12 were 25.72 ± 2.85 to 77.14 ± 3.42 % and 65.47 ± 1.25 to 99.65 ± 2.28 %, respectively. Stability studies revealed that no significant change in in vitro floating lag time, total floating time and drug release behavior before and after storage. CONCLUSION It can be concluded that a combination of hydroxypropyl methylcellulose K 15M, sodium carboxy methylcellulose and NaHCO3 can be used to increase the gastric residence time of the dosage form to improve local effect of metronidazole.
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Affiliation(s)
- Kishore Rapolu
- National Facilities in Engineering and Technology with Industrial Collaboration (NAFETIC) centre, University College of Pharmaceutical Sciences, Kakatiya University , Warangal, AP , India
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Liu Y, Di Zang H, Kong M, Ma FK, Dang QF, Cheng XJ, Ji QX, Chen XG. In vitro evaluation of mucoadhesion and permeation enhancement of polymeric amphiphilic nanoparticles. Carbohydr Polym 2012; 89:453-60. [DOI: 10.1016/j.carbpol.2012.03.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/22/2012] [Accepted: 03/08/2012] [Indexed: 11/28/2022]
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Shin BK, Baek EJ, Choi SG, Davaa E, Nho YC, Lim YM, Park JS, Huh KM, Park JS. Preparation and irradiation of Pluronic F127-based thermoreversible and mucoadhesive hydrogel for local delivery of naproxen. Drug Dev Ind Pharm 2012; 39:1874-80. [DOI: 10.3109/03639045.2012.665925] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Mazzarino L, Travelet C, Ortega-Murillo S, Otsuka I, Pignot-Paintrand I, Lemos-Senna E, Borsali R. Elaboration of chitosan-coated nanoparticles loaded with curcumin for mucoadhesive applications. J Colloid Interface Sci 2012; 370:58-66. [DOI: 10.1016/j.jcis.2011.12.063] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 12/21/2011] [Accepted: 12/22/2011] [Indexed: 10/14/2022]
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Pal D, Nayak AK. Novel tamarind seed polysaccharide-alginate mucoadhesive microspheres for oral gliclazide delivery:in vitro–in vivoevaluation. Drug Deliv 2012; 19:123-31. [DOI: 10.3109/10717544.2012.657717] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pal D, Nayak AK. Development, optimization, and anti-diabetic activity of gliclazide-loaded alginate-methyl cellulose mucoadhesive microcapsules. AAPS PharmSciTech 2011; 12:1431-41. [PMID: 22038475 DOI: 10.1208/s12249-011-9709-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 10/06/2011] [Indexed: 11/30/2022] Open
Abstract
The purpose of this work was to develop and optimize gliclazide-loaded alginate-methyl cellulose mucoadhesive microcapsules by ionotropic gelation using central composite design. The effect of formulation parameters like polymer blend ratio and cross-linker (CaCl(2)) concentration on properties of gliclazide-loaded alginate-methyl cellulose microcapsules like drug encapsulation efficiency and drug release were optimized. The optimized microcapsules were subjected to swelling, mucoadhesive, and in vivo studies. The observed responses coincided well with the predicted values from the optimization technique. The optimized microcapsules showed high drug encapsulation efficiency (83.57 ± 2.59% to 85.52 ± 3.07%) with low T(50%) (time for 50% drug release, 5.68 ± 0.09 to 5.83 ± 0.11 h). The in vitro drug release pattern from optimized microcapsules was found to be controlled-release pattern (zero order) with case II transport release mechanism. Particle sizes of these optimized microcapsules were 0.767 ± 0.085 to 0.937 ± 0.086 mm. These microcapsules also exhibited good mucoadhesive properties. The in vivo studies on alloxan-induced diabetic rats indicated the significant hypoglycemic effect that was observed 12 h after oral administration of optimized mucoadhesive microcapsules. The developed and optimized alginate-methyl cellulose microcapsules are suitable for prolonged systemic absorption of gliclazide to maintain lower blood glucose level and improved patient compliance.
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Kamel R, Mahmoud A, El-Feky G. Double-phase hydrogel for buccal delivery of tramadol. Drug Dev Ind Pharm 2011; 38:468-83. [DOI: 10.3109/03639045.2011.611807] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Alli SMA. Preparation and characterization of a coacervate extended-release microparticulate delivery system for Lactobacillus rhamnosus. Int J Nanomedicine 2011; 6:1699-707. [PMID: 21984867 PMCID: PMC3184930 DOI: 10.2147/ijn.s19589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The purpose of this study was to develop a mucoadhesive coacervate microparticulate system to deliver viable Lactobacillus rhamnosus cells into the gut for an extended period of time while maintaining high numbers of viable cells within the formulation throughout its shelf-life and during gastrointestinal transit. METHODS Core coacervate mucoadhesive microparticles of L. rhamnosus were developed using several grades of hypromellose and were subsequently enteric-coated with hypromellose phthalate. Microparticles were evaluated for percent yield, entrapment efficiency, surface morphology, particle size, size distribution, zeta potential, flow properties, in vitro swelling, mucoadhesion properties, in vitro release profile and release kinetics, in vivo probiotic activity, and stability. The values for the kinetic constant and release exponent of model-dependent approaches, the difference factor, similarity factor, and Rescigno indices of model-independent approaches were determined for analyzing in vitro dissolution profiles. RESULTS Experimental microparticles of formulation batches were of spherical shape with percent yields of 41.24%-58.18%, entrapment efficiency 45.18%-64.16%, mean particle size 33.10-49.62 μm, and zeta potential around -11.5 mV, confirming adequate stability of L. rhamnosus at room temperature. The in vitro L. rhamnosus release profile follows zero-order kinetics and depends on the grade of hypromellose and the L. rhamnosus to hypromellose ratio. CONCLUSION Microparticles delivered L. rhamnosus in simulated intestinal conditions for an extended period, following zero-order kinetics, and exhibited appreciable mucoadhesion in simulated intestinal conditions.
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Affiliation(s)
- Sk Md Athar Alli
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India.
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Gao P, Nie X, Zou M, Shi Y, Cheng G. Recent advances in materials for extended-release antibiotic delivery system. J Antibiot (Tokyo) 2011; 64:625-34. [DOI: 10.1038/ja.2011.58] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lectin-functionalized carboxymethylated kappa-carrageenan microparticles for oral insulin delivery. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.070] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Abstract
Many strategies have been proposed to explore the possibility of exploiting gastroretention for drug delivery. Such systems would be useful for local delivery, for drugs that are poorly soluble at higher pH or primarily absorbed from the proximal small intestine. Generally, the requirements of such strategies are that the vehicle maintains controlled drug release and exhibits prolonged residence time in the stomach. Despite widespread reporting of technologies, many have an inherent drawback of variability in transit times. Microparticulate systems, capable of distributing widely through the gastrointestinal tract, can potentially minimise this variation. While being retained in the stomach, the drug content is released slowly at a desired rate, resulting in reduced fluctuations in drug levels. This review summarises the promising role of microencapsulation in this field, exploring both floating and mucoadhesive microparticles and their application in the treatment of Helicobacter pylori, highlighting the clinical potential of eradication of this widespread infection.
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Affiliation(s)
- Adeola Adebisi
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
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